Survival is a skill from the wow beta.The purpose of the skill was to enable you to set up campfires and create/hold torches.

There were 2 different types of campfires. A basic campfire which grants 4 spirit to those nearby and allows cooking, and a bright campfire which is very much like a basic campfire but gives you an additional 4 spirit. And it's bigger too.

Torches were sold by vendors and you could light them at your campfire.When carrying the torch in your hand, you and your group would receive a small bonus to spirit and it would create a little more light at night.

At first wow was intended to be much darker at night and in zones like duskwood so a torch or a campfire would increase your view distance (light radius in D2) but that idea never made it into the game.

The survival skill was disabled during beta and the campfire idea was put into the cooking skill.